ABSTRACT

For many years, isolation in tissue culture (TC) was considered the test of choice for diagnosis of Chlamydia trachomatis infection. Non-culture tests, such as direct fluorescent antibody (DFA) and enzyme immunoassay (EIA) which detected chlamydia) antigens in clinical specimens, made chlamydia diagnostic tests more widely available. DFA and EIA were less sensitive than TC and had some false positive results which compromised our ability to use these tests in low prevalence settings.